High severity · published Oct 16, 2023
CVE-2023-45151
Nextcloud server is an open source home cloud platform
8.8
CVSS
0.6%
EPSS
No
On KEV
Description
Nextcloud server is an open source home cloud platform. Affected versions of Nextcloud stored OAuth2 tokens in plaintext which allows an attacker who has gained access to the server to potentially elevate their privilege. This issue has been addressed and users are recommended to upgrade their Nextcloud Server to version 25.0.8, 26.0.3 or 27.0.1. There are no known workarounds for this vulnerability.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
NS
Nextcloud Server · Nextcloud
25.0.0 before 25.0.8; 25.0.0 before 25.0.8; 26.0.0 before 26.0.3; 26.0.0 before 26.0.3; 27.0.0; 27.0.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-45151
CVE.org
https://www.cve.org/CVERecord?id=CVE-2023-45151
Vendor Advisory
https://github.com/nextcloud/security-advisories/security/advisories/GHSA-hhgv-jcg9-p4m9
Issue Tracking
https://github.com/nextcloud/server/pull/38398
Permissions Required
https://hackerone.com/reports/1994324
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